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131232413 = 1347214783
BaseRepresentation
bin1111101001001…
…11001010011101
3100010221022000202
413310213022131
5232043414123
621004433245
73152312534
oct764471235
9303838022
10131232413
1168093944
1237b48825
132125a720
141360131b
15b7c3a28
hex7d2729d

131232413 has 8 divisors (see below), whose sum is σ = 144334848. Its totient is φ = 118559664.

The previous prime is 131232389. The next prime is 131232427. The reversal of 131232413 is 314232131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131232413 - 216 = 131166877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131232433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106781 + ... + 108002.

It is an arithmetic number, because the mean of its divisors is an integer number (18041856).

Almost surely, 2131232413 is an apocalyptic number.

131232413 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

131232413 is a deficient number, since it is larger than the sum of its proper divisors (13102435).

131232413 is a wasteful number, since it uses less digits than its factorization.

131232413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214843.

The product of its digits is 432, while the sum is 20.

The square root of 131232413 is about 11455.6716520682. The cubic root of 131232413 is about 508.1754785202.

Adding to 131232413 its reverse (314232131), we get a palindrome (445464544).

The spelling of 131232413 in words is "one hundred thirty-one million, two hundred thirty-two thousand, four hundred thirteen".

Divisors: 1 13 47 611 214783 2792179 10094801 131232413